source: branches/2913_MatlabScriptProblemInstanceProvider/HeuristicLab.ExtLibs/HeuristicLab.AvalonEdit/5.0.1/AvalonEdit-5.0.1/Utils/NullSafeCollection.cs @ 15888

// Copyright (c) 2014 AlphaSierraPapa for the SharpDevelop Team
// 
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// software and associated documentation files (the "Software"), to deal in the Software
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// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
// to whom the Software is furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in all copies or
// substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
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using System;
using System.Collections.ObjectModel;

namespace ICSharpCode.AvalonEdit.Utils
{
  /// <summary>
  /// A collection that cannot contain null values.
  /// </summary>
  [Serializable]
  public class NullSafeCollection<T> : Collection<T> where T : class
  {
    /// <inheritdoc/>
    protected override void InsertItem(int index, T item)
    {
      if (item == null)
        throw new ArgumentNullException("item");
      base.InsertItem(index, item);
    }
    
    /// <inheritdoc/>
    protected override void SetItem(int index, T item)
    {
      if (item == null)
        throw new ArgumentNullException("item");
      base.SetItem(index, item);
    }
  }
}